1983601 has 2 divisors, whose sum is σ = 1983602. Its totient is φ = 1983600.

The previous prime is 1983599. The next prime is 1983643. The reversal of 1983601 is 1063891.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1382976 + 600625 = 1176^2 + 775^2 .

It is an emirp because it is prime and its reverse (1063891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1983601 - 2¹ = 1983599 is a prime.

Together with 1983599, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1983601.

It is not a weakly prime, because it can be changed into another prime (1983001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991800 + 991801.

It is an arithmetic number, because the mean of its divisors is an integer number (991801).

2^1983601 is an apocalyptic number.

It is an amenable number.

1983601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1983601 is an equidigital number, since it uses as much as digits as its factorization.

1983601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1983601 is about 1408.4037063286. The cubic root of 1983601 is about 125.6468020707.

The spelling of 1983601 in words is "one million, nine hundred eighty-three thousand, six hundred one".